CERMC GREYSTONE | Alldatasheet
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GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM ROOM CARBON DIOXIDE TRANSMITTER CERMC SERIES PRODUCT DESCRIPTION The CERMC series of CO2 sensor uses a highly accurate and reliable Non-Dispersive Infrared (NDIR) sensor in an attractive, low-profile enclosure to monitor ambient CO2 levels for room applications. The compact dual wavelength CO2 sensor achieves excellent performance characteristics, including high accuracy and low power consumption to ensure stable long term operation. The CO2 sensor features user selectable 4-20 mA or 0-5 Vdc or 0-10 Vdc for simple integration into any building automation system. The device is also available with an optional resistive temperature sensor. TYPICAL INSTALLATION For complete installation and wiring details, please refer to the product installation instructions. The room CO2 sensor series can be mounted directly to a single gang electrical box or directly to the wall. The backplate includes many mounting hole configurations to allow for mounting on a variety of electrical boxes. The basic CO2 sensor has a 3 wire configuration with a screw terminal block provided for connection to the Building Automation System. CO2 SENSOR Dual channel Non-Dispersive Infrared (NDIR) RANGE 0-2000 ppm ACCURACY ±(30ppm +3% of reading) TEMPERATURE DEPENDENCY ±2.5 ppm/°C RESPONSE TIME 20 seconds (T63) WARM-UP TIME 1 minute SENSOR COVERAGE AREA 100m2 (1000ft2) typical SENSOR LIFE SPAN >15 years POWER SUPPLY 24 Vac/dc ±15% (non-isolated half-wave rectified) CONSUMPTION 80 mA max @ 24 Vdc, 160 mA max @ 24 Vac PROTECTION CIRCUITRY Reverse voltage and transient protected OUTPUT SIGNALS 4-20 mA, 0-5 Vdc, 0-10 Vdc (field selectable) DRIVE CAPABILITY @ 24 VDC Current: 600Ω maximum Voltage: 10 KΩ minimum OPTIONAL TEMPERATURE SENSOR Various thermistors or RTD’s as a 2 wire resistance output OPERATING CONDITIONS 0to 50°C (32 to 122°F), 0-90 %RH non-condensing STORAGE CONDITIONS -40 to 70°C (-40 to 158°F), 0-85 %RH non-condensing WIRING CONNECTIONS Screw terminal block (14 to 22 AWG) ENCLOSURE ABS, UL94-V0, IP30 (NEMA 1) APPROVALS CE, RoHS COUNTRY OF ORIGIN Canada SPECIFICATIONS This CO2 sensor incorporates a Self Calibration feature to correct CO2 sensor drift. This CO2 sensor is recommended for applications where the CO2 level will be close to normal (400 ppm) at least one hour per day. If the monitored space is occupied 24 hours or consistently maintains higher levels of CO2 level, the CD2 Series is recommended. 29 mm 1.15" 119 mm 4.7" 58 mm 2.3" 82.6 mm 3.25" 84 mm 3.3"
PRINTED IN CANADA Copyright © Greystone Energy Systems Inc. All Rights Reserved www.greystoneenergy.com PS-CERMCXXX-03 Greystone Energy Systems, Inc.
150 English Drive, Moncton,
New Brunswick, Canada E1E 4G7 Ph: +1 (506) 853-3057 Fax: +1 (506) 853-6014 North America: 1-800-561-5611 E-mail: mail@greystoneenergy.com WIRING INFORMATION TERMINAL FUNCTION PWR + 24 Vac/dc COM Common mA Current Output VOLT Voltage Output TEMP Resistance Output SENSOR Resistance Output PRODUCT CERMC Room Carbon Dioxide Transmitter SENSOR 00 No temperature selected 100Ω Platinum RTD 1801Ω Thermistor 3000Ω Thermistor 10,000Ω Thermistor, type 3 2.252KΩ Thermistor 1000Ω Platinum RTD 1000Ω Nickel RTD 10,000Ω Thermistor, Type 3 with 11K shunt resistor 20,000Ω Thermistor 10,000Ω Thermistor, Type 2 ORDERING CERMC PART NUMBER NOTE: Greystone Energy Systems, Inc. reserves the right to make design modifications without prior notice. 5V 10V PWR COM mA VOLTTEMP